>Hi,
>
>I tried using:
>

>  public class BaseObject
>    {
>        private BaseObject() { }
>    }
>

>to prevent other developers directly creating an instance of the class. I was hoping to sub-class from this and have the behaviour inherited by these classes. Seems that's not possible - in fact I can't sub-class from BaseObject at all because 'BaseObject is inaccessible due to it's protection level'. Any other way to achieve what I need (I don't like the idea of having to put private constructors in all the leaf classes)
>
>Regards,
>Viv

Viv,
Wouldn't 'protected' in base do what you want?
Cetin